Evidence map›Paper›PMID 19125158›Full record

ArticleMolecular psychiatry2010

A SNAP25 promoter variant is associated with early-onset bipolar disorder and a high expression level in brain.

B Etain, A Dumaine, F Mathieu, F Chevalier, C Henry, J-P Kahn, J Deshommes, F Bellivier, M Leboyer, S Jamain

Open access · greenAbstract read
In one paragraph

Article in Molecular psychiatry, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 3 pooled it
3.5field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

38 citing papers in PubMed, 3 syntheses or guidelines pooled it, 85 citations in OpenAlex.

  1. Pooled it
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  19. Genetic Studies on the Tripartite Glutamate Synapse in the Pathophysiology and Therapeutics of Mood Disorders.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2017
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 4 institutions in 1 country.

B EtainINSERM, U 955, IMRB, Department of Genetics, Psychiatry Genetics, Creteil, F-94010, France.
A Dumaine
F Mathieu
F Chevalier
C Henry
J-P Kahn
J Deshommes
F Bellivier
M Leboyer
S Jamain
Institut Mondor de Recherche Biomédicale · FRInserm · FRHôpital Albert-Chenevier · FRHôpital Jeanne d'Arc · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Bipolar disorder (BD) is one of the most common and persistent psychiatric disorders. Early-onset BD has been shown to be the most severe and familial form. We recently carried out a whole-genome linkage analysis on sibpairs affected by early-onset BD and showed that the 20p12 region was more frequently shared in our families than expected by chance. The synaptosomal-associated protein SNAP25 is a presynaptic plasma membrane protein essential for the triggering of vesicular fusion and neurotransmitter release, and for which abnormal protein levels have been reported in postmortem studies of bipolar patients. We hypothesised that variations in the gene encoding SNAP25, located on chromosome 20p12, might influence the susceptibility to early-onset BD. We screened SNAP25 for mutations and performed a case-control association study in 197 patients with early-onset BD, 202 patients with late-onset BD and 136 unaffected subjects. In addition, we analysed the expression level of the two SNAP25 isoforms in 60 brains. We showed that one variant, located in the promoter region, was associated with early-onset BD but not with the late-onset subgroup. In addition, individuals homozygous for this variant showed a significant higher SNAP25b expression level in prefrontal cortex. These results show that variations in SNAP25, associated with an increased gene expression level in prefrontal cortex, might predispose to early-onset BD. Further analyses of this gene, as well as analysis of genes encoding for the SNAP25 protein partners, are required to understand the impact of such molecular mechanisms in BD.

Indexed as

Gene Expression RegulationPolymorphism, Single NucleotideAdultAge of OnsetBipolar DisorderCase-Control StudiesFemaleGenetic Association StudiesHumansMaleMiddle AgedPrefrontal CortexPromoter Regions, GeneticProtein IsoformsSynaptosomal-Associated Protein 25Protein IsoformsSNAP25 protein, humanSynaptosomal-Associated Protein 25

Identifiers

PMID19125158
PMCPMC2937032
OpenAlexW2006878605

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.